Academic Journals Database
Disseminating quality controlled scientific knowledge

EFFECT OF ANTHROPOGENIC POLLUTION LOADS ALONG IKPA RIVER TRIBUTARY UNDER URBANIZATION EXPANSION

ADD TO MY LIST
 
Author(s): O. E. ESSIEN

Journal: Journal of Applied Sciences in Environmental Sanitation
ISSN 0126-2807

Volume: 5;
Issue: 3;
Start page: 273;
Date: 2010;
VIEW PDF   PDF DOWNLOAD PDF   Download PDF Original page

Keywords: Eutrophication | metal toxicity | municipal and abattoir wastewaters | total solids | urban drainage river | WHO standards

ABSTRACT
Anthropogenic pollution loads from on-going urban renewal and expansion in Uyo, as a capital territory, was investigated along the upstream and downstream subreaches of ikpa tributary/urban drainage river. Upstream subreach draining the immediate vicinity of municipality was polluted by raw MSW leachate effluent, unprocessed sewered municipal wastewater at its upstream and general NPS drainage water while the downstream subreach was polluted by abattoir wastewater and extensive NPS drainage which also drained the goat park/market increasing COD/BOD ratio above 2.6 tending to non-biodegradable waste. High heavy metals, especially iron and copper, were observed in the river in wet season, and in municipal and abattoir wastewaters, while lead, in the two former media was generally low with no indication in the later. Upstream recorded highest load of heavy metal in sewered wastewater but lowest in MSW leachate. Without matching environmental sanitation with increasing urbanization projects in expanding municipalities, discharge of large un-regulated NPS pollution loads increased pollution concentrations especially solids, nutrients and coliform bacteria in downstream urban drainage river beyond WHO standards for drinking water. On-course settling tank at upstream subreach and buffer filters along river banks should be constructed.

Tango Jona
Tangokurs Rapperswil-Jona

     Save time & money - Smart Internet Solutions